How does it compare to the last?
Better, IMO. The area is better, more quests. PVP is still great in the event, even on our PVE server. We had roving bands of pubs and imps chasing each other across instances from like 3 in the day until about 2 in the morning.
I did it on three characters. Also did 16 man story The Eyeless and 16 man hard mode The Eyeless...not gonna be many pugs taking down The Eyeless like they did Xeno on hard mode. He hits like a goddamn truck, the "crush"/stomp mechanic is simple but it's the very kind of thing pugs fail at, and the adds just keep piling up unless you've got some nice ranged dps. It was very fun, to be honest. Has a lot of HP. He drops a ton of canisters on hardmode too.
I'm almost to friend now, just a few quests shy. There was enough PVP going on in the rakghoul area to where the PVP queues were actually pretty slow (5 mins instead of like 1 min tops) which was neat to see. I didn't get involved in it much, but the guild I ran the SM and HM with were there for most of the day PVPing.
Kudos to BW/EA for another good one.
EDIT: Apparently, no one else agrees with the above statement, lol.